CODEWITHSUNDEEP
rtex
yCalleecharan
yCalleecharan

Reputation: 4704

Is it possible to have symbolic expressions output in TeX form

say I am taking the derivative of an expression in R:

 D(expression((x^3)/(2*(x+1))),"x")

The output is:

3 * x^2/(2 * (x + 1)) - (x^3) * 2/(2 * (x + 1))^2

I was wondering if this output can be shown on the screen in TeX form, which is easier to read.

Thanks.

Upvotes: 2

Views: 266

Answers (2)

G. Grothendieck
G. Grothendieck

Reputation: 269905

Check out Ryacas:

> library(Ryacas)
> yacas("TeXForm(3 * x^2/(2 * (x + 1)) - (x^3) * 2/(2 * (x + 1))^2)", 
+   retclass = "unquote")
$\frac{3 x ^{2}}{2 \left( x + 1\right) }  - \frac{2 x ^{3}}{\left( 2 \left( x + 1\right) \right)  ^{2}} $

EDIT: or

> library(Ryacas)
> x <- Sym("x")
> y <- (x^3)/(2*(x+1))
> dy <- deriv(y, x)
> dy <- Simplify(dy)
> fmt <- sprintf("TeXForm(%s)", dy)
> yacas(fmt, retclass = "unquote")
$\frac{\left( 2 x + 3\right)  x ^{2}}{2 \left( x ^{2} + 2 x + 1\right) } $

Upvotes: 5

Anton Korobeynikov
Anton Korobeynikov

Reputation: 9324

Well, standard text-plotting routines accept the arguments of type 'expression' and interpret them via TeX-like rules. See ?plotmath for more information. In your case you can use something like this:

plot(1:10, 1:10, type = "n")
text(5, 5,  D(expression((x^3)/(2*(x+1))),"x"))

Upvotes: 2

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